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No, I made this adapter for ease of testing these comm slot cards during production. Overall though, I figure most PCI cards would work in the comm slot since it seems to just be "PCI Slot E1".

My latest experimental PCB arrived, a CS II to PCI interposer/converter. Note that Comm Slot II is not a direct pin to pin mapping of PCI, so this does change pin assignments. But it really is just PCI. Works fine with my Ethernet CS II card. Yes, I'm using a PCI slot for where the CS II...

Did a little more testing with the 7300's built in "plain 10" Ethernet port. ~170kB per second in 9.1 using iCab, sometimes spiking to 200kB per second. This at least helps to show that it's not 100% the driver's fault. Downloading from the internet in general seems to be very slow and...

It's not something I've really ever done before. I've used "mouse bites" as they are called to make boards that can be snapped apart. But not for modular implementations like this, where you can just break part of the board off and things are still ok. Something to think about though.

I've never set up modern FTP or AFP servers before. Have any pointers on how to do this? I did try some FTP host software from the Garden but that only resulted in about 80kB per second download speed.

Ah, we were saying basically the same thing. This is what I meant by "second half", adding a breakout or shortening to use this style connector. Are there panel-mount Ethernet ports that have the necessary magnetic components inside? The Ethernet jack I picked for this use case have that...

Tested putting a 10/100 switch between this CS II card and my gigabit network, no change in download speeds from Macintosh Garden. ~100kB per second on the 6400 CS II running 7.6 using Netscape ~150kB per second on the 6400 CS II running 9.1 and iCab ~150kB per second on my 7300 original PCI...

Almost certainly, yes. 100 megabit Ethernet would probably saturate NuBus entirely - though it's a 660, very nice 68k machine overall. If you could just download something "large" from the Maintosh Garden like the Tie Fighter install sit file (over 200 megabytes total, don't need to pull it...

It's 150KB per second, kilobytes (not bits). Maybe something is up with my switch, just haven't been able to run down the networking permutations yet. I do have an older 10/100 switch that could be placed between the device and upstream to see if it helps - was hoping the native 100 megabit...

This is a two-layer PCB. The extra-long length to match the original doesn't add a lot to the overall cost when made in larger batches. Adding a second half that sits where the bracket goes is complexity that I would like to avoid. Help me understand what the TAM/CSII riser is for - two PCI...

This is a stealth project I've been slowly working through for some time now. With Comm Slot II Ethernet cards being hard to come by, and often for high prices, it seemed like a decent target for recreation / re-engineering. My approach here was originally going to be "remake the official...

Looking at the schematic, PDS pins 2 through 4 on columns A, B, and C are all the main 5v source. There aren't any control signals mixed in over there to cause problems. This gives me one idea for why it might cause problems: accidental inversion of the intended pin. If the measurement was...

A new version of the BlueSCSI V2 Centronics 50 Pin is now available: https://androda.work/product/bluescsi-v2-centronics-50-pin-shorter/ Like it says in the URL, this is literally a shorter version of the previous design. Similar to the smaller DB25, it's over 1cm shorter than the prior version...

It's quite unlikely that use of the battery eliminator would cause different BlueSCSI behavior. As has been mentioned, it acts as a forever-charged battery. The Portable's power system is designed to run off the battery anyway, with the power adapter acting only to recharge the battery when...

The pull resistors situationally hold those pins high. It's expected that both of them are able to transition between high and low as needed. When the Pi Foundation created the RP2040 microcontroller they made one design decision which I think is completely wrong. All GPIO pins are "pull...

Just to double check, you are referring to GPIO #27? That GPIO pin is controls the SCSI BSY signal and is not expected to have a consistently high or low voltage. The SCSI protocol will cause that pin to bounce around from high to low rapidly. The only place to reliably check 3.3v regulation...

Hmm, do you mean the 3.3v line "slowly rises from 0 to 3.3v" like 0.5v, 1v, 2v, etc. or that it rapidly jumps from 0 to 3.3 but it takes a long time to come back on? I've done some testing over lunch and discovered a very interesting behavior on the Portable. If you put it to sleep, wait a...

I don't know what causes this presumption. The BlueSCSI PCB does not connect to the Pico's USB data pins on a 2022.12a hardware version. The only common connection is ground, as the USB ground flows through to the Pico's ground pins. This situation has come up a few times in the BlueSCSI...

5 flashes means the Pico is unable to connect to the SD card, as mentioned in the troubleshooting document. One important note is that the SD card is powered from the Pico's 3.3v regulator. So when your standard Pico's regulator started generating over 4 volts, the SD card may have been...

Your repeated at-mentioning me and Eric on this issue does not increase its visibility - both of us are already watching this thread. Paolo's comment asking for help with the non-functional BlueSCSI was two days ago. Not a week, not a month, two days. Given that people have responsibilities...